semaphore: set BCC_KERNEL_MODULES_SUFFIX
semaphore: set BCC_KERNEL_MODULES_SUFFIX

A stage1-kvm as built with https://github.com/kinvolk/stage1-builder has
its kernel headers in `/lib/modules/$(uname -r)/source/...`.

louism517/gobpf,louism517/gobpf,louism517/gobpf